US4924686A - Contact device for transmitting electrical signals between a lock and key in a cylinder lock - Google Patents

Contact device for transmitting electrical signals between a lock and key in a cylinder lock Download PDF

Info

Publication number
US4924686A
US4924686A US07/279,155 US27915588A US4924686A US 4924686 A US4924686 A US 4924686A US 27915588 A US27915588 A US 27915588A US 4924686 A US4924686 A US 4924686A
Authority
US
United States
Prior art keywords
key
contact
elements
rotor
lock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/279,155
Other languages
English (en)
Inventor
Benno Vonlanthen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
R Berchtold AG
Original Assignee
R Berchtold AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH45587A external-priority patent/CH671799A5/de
Application filed by R Berchtold AG filed Critical R Berchtold AG
Assigned to R. BERCHTOLD AG, A CORP. OF SWITZERLAND reassignment R. BERCHTOLD AG, A CORP. OF SWITZERLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VONLANTHEN, BENNO
Application granted granted Critical
Publication of US4924686A publication Critical patent/US4924686A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/001—Locks for use with special keys or a plurality of keys ; keys therefor with key identifying function
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944—Details of construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/06—Key inserted and then turned to effect operation of the switch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y10T70/7107—And alternately mechanically actuated by a key, dial, etc.
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7802—Multi-part structures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7881—Bitting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7904—Magnetic features

Definitions

  • the invention relates to a contact device for transmitting electrical signals between a lock and key in a cylinder lock with a stator housing.
  • a rotor is arranged therein with mechanical holding devices and a key channel having a portion in which contact elements for the signal transmission are present, as well as a key with an integrated electronic information carrier.
  • contact points are arranged on the key barb in a portion beside the mechanical codings.
  • Cylinder locks of this kind are used where the security of the known, purely mechanical cylinder locks no longer satisfy the requirements, and additional electronic security means are arranged both on the key and on the lock.
  • Setting the key to such cylinder locks with at least one memory element which contains a magnetic or electronic code is known.
  • this lock is a corresponding reading device which may consist of a simple electronic reading unit or one or more microprocessors.
  • optical, inductive or mechanical contact elements may be used for transmitting the stored data from the key to the lock.
  • optical, inductive or mechanical contact elements may be used for transmitting the stored data from the key to the lock.
  • the key and cylinder lock in such locking devices are exposed to many disturbing influences, such as soiling, deformation, strong magnetic fields, etc., and there are often disturbances in use with such locks and keys set with added electronic elements. This occurs especially where the transmission of the stored data takes place through optical or inductive contact elements.
  • pin holding devices are supported in a rotor which can rotate in the stator housing of the cylinder lock. If the key incisions agree with the penetration depth of the pin holding devices, the mechanical blocking between rotor and stator housing is removed.
  • an electronic security system at the end of the key barb is arranged an electronic security system.
  • a data carrying ring for example, in the form of a magnetic strip or with a light or electrooptical point or strip screening.
  • a reading head which, without contact, produces the contact for the passage of information between key and lock. This contact or reading unit decodes the data contained on the key and checks it for agreement with the data stored in the lock.
  • a lock and key system is known from German Patent No. 3,006,128 A1, in which the information is transmitted from the key to the lock through a mechanical contact device.
  • an electronic circuit is placed in the key barb portion of the key, which contains among other things, memory units for electronic codings.
  • On the key barb are arranged contact rings which are connected with the electronic circuit.
  • the receiving housing for the key contains slide contacts which, with the key completely inserted, lie against the contact surfaces on the key barb.
  • a lock which can be actuated electromagnetically and which is controlled by a locking control such as a microprocessor for example. With agreement of the data stored in the electronics of the key with the allowing conditions in the control of the lock, this opens the electromagnetic lock.
  • the problem of the present invention is to provide a mechanical contact device between lock and key, which is so small that it can easily be built into a known mechanical cylinder lock system.
  • This can be developed to a mechanical-electronic cylinder lock which is arranged in only a portion of the circumference of the rotor and takes up only a portion of the circumference of the stator. Trouble-free contacting between key and lock is assured over a long life, and despite the great miniaturization, a security of operation is attained which corresponds to that of the known mechanical lock and key systems.
  • a mantle segment is cut out on the stator housing. This cut-out frees a portion of the mantle of the rotor and the portion of the key channel which serves to receive the key barb portion with the contact points.
  • a guide element of electric insulating material is arranged for contact elements which are fastened to a bearing plate.
  • the contact element engaging in the guide element consist of pairs of slide springs.
  • the spring elements are placed in the freed portion of the rotor mantle, on both sides of the axis, tangential with and free of contact with the rotor mantle.
  • the bearing plate with the contact elements and the guide element are set radially into the stator cut-out and enclosed by the protective sheath.
  • the contact device on the lock includes an arc shaped guide element on which a conductor plate and at least two pairs of mechanical contact elements are arranged side-by-side.
  • the contact elements in the installed condition, are in the portion of the lock. With the key inserted, the contact points arranged on the barb of the key are positioned.
  • the contact elements are connected directly with the conductor plate, giving a very compact construction in the portion of the guide element. Since the guide element has the form of a ring segment of the stator housing, the unit formed by the guide element with the contact elements and the conductor plate can be set radially into the stator housing. This facilitates the installation and removal of the contact device with at least a part of the respective electronic elements on the lock.
  • contact elements and conductor plate can be removed without having to remove rotatable mechanical elements of the lock, especially the rotor.
  • One preferred form of execution of the invention is distinguished by the fact that the bearing plate has a reinforced conductor plate, and the connection parts of the conductor elements are connected with conductors on the plate. It has also proved advantageous that the spring elements of the contact elements are separated in the middle portion and have two contact points.
  • the contact elements designed as spring elements each with a pair of legs forming a slide spring are fastened through the connection part, and fastened to the conductor plate into their position in the lock or on the guide element.
  • the distance between the individual contact elements corresponds to the distance of the contact points on the key barb.
  • One slide spring element of each contact element forms, on both sides of the connection part, a tangent to the outer diameter of the rotor without touching the rotor. This is assured by the free guiding of the spring portion of the slide spring elements in the guide element, and the shape of the spring portion.
  • the contact elements arranged one after the other in the direction of the axis of the lock are fastened definitely into their position, but at the same time, take up only a portion of the circumference of the rotor.
  • the arrangement and shape of the two slide spring elements of each contact element assure also the exact amount of the contact forces, as well as high security and useful life.
  • Each of the slide spring elements has several spring portions. Since the slide spring elements are exactly positioned and fastened into their mutual position, they can be designed broader and additionally separated. The separation takes place by means of a lengthwise slide or the arrangement of two spring elements.
  • Another preferred form of execution consists of the fact that the slide springs are arranged in the portion of a maximum of 90° on both sides of the pull-out position of the key channel. Since the pull-out position of the key channel is identical with that position in which the key can be inserted in the lock, it follows that the transmission of data between key and lock is possible during a maximum of 90° rotation of the key in both directions. Through the symmetrical design of the slide spring elements on both sides of the key channel, the production of an electric contact between lock and key, in both rotation directions, is assured.
  • the rotor, in the portion of the slide spring elements has on its outer mantle a circular groove, and there is a space between the slide spring elements and the bottom of the groove.
  • Another preferred form of execution consists of the fact that with the key inserted fully into the key channel of the rotor, the narrow side with the contact points of the key stands out above the bottom of the groove on the rotor, and during a part of the rotary movement of the rotor touches the slide spring element.
  • a microswitch is arranged on the bearing plate.
  • This microswitch is switched into the electric current circuit, and has a switch pin as a switching element of which the end projects into the key channel.
  • the microswitch includes a foil key which is integrated into the conductor plate. Foil keyboards are used at present in the operating fields of machine controls. The combination with a switch pin makes possible integration into the network of electric conductors on the conductor plate and thus the bringing together of the important electric parts on the conductor or bearing plate.
  • the subject of the invention may be used in a simple way for the turning on of the electric source.
  • the switch pin of the microswitch cooperates with the key in the zone of the rear three-fourths of the length of the key barb extending from the beginning of the contact part to the end of the key.
  • the microswitch is activated before the key has been completely inserted in the lock.
  • This has the advantage that batteries, for example, by breakdown of the passivation layer in lithium batteries and other electronic elements, are activated before the signal transmission between key and lock begins.
  • the microswitch is arranged more toward the first fourth of the key barb or toward the contact part.
  • Another advantageous form of execution of the invention is distinguished by the fact that on the two contact surfaces between the stator housing and the guide element on the stator housing, and/or on the guide element, parallel guide grooves are arranged running about perpendicular to the axis of the rotor, and the free ends of the slide spring elements of the contact elements are supported movable in these grooves. With this arrangement, the individual slide spring elements are supported at both ends. This makes possible an exact regulation of spring force in the middle portion of the slide spring element and give a high mechanical security. Guide element and contact elements can be set radially, in a simple way, into the stator housing without need of involving the mechanical portion of the lock.
  • the free ends of the slide spring elements or the contact elements are provided with an electric insulating layer and/or the guide grooves are provided with an electric insulating layer.
  • the insulation layers used may be of various known materials, such as Teflon for example.
  • the contact elements have in the portion of the axis of the lock, a connection part.
  • the two slide spring elements proceed form this connection part, and bend into the portion away from the connection part, and lead back toward the connection part.
  • Each slide spring element is formed to two spring portions running about parallel. The spring portion with the free spring element ends is directed toward the rotor and arranged free of contact with the rotor. The free end of each slide spring element is supported against a middle support of the guide element.
  • the slide spring elements are fastened to the conductor plate and the spring portions are movable freely in the guides of the guide element.
  • the contact elements arranged in succession in the direction of the axis of the lock are definitely fastened in their position, but take up at the same time only a portion of the circumference of the rotor.
  • This arrangement and shaping of the two slide spring elements of each contact element assures the exact regulation of the contact forces as well as great security and a long life.
  • Each of the slide spring elements has several spring portions. At the clamping point, the bending point along the two spring portions running about parallel can spring inward. In this way, the load of the material in the individual bending points is reduced. The bending amounts are to 160° at a minimum and 200° at a maximum.
  • the contacting device according to the invention can be designed in miniaturized construction. It can easily be combined with the known mechanical lock and key systems, and integrated into a corresponding cylinder lock.
  • the security of the contacting between lock and key is greatly increased by the proposed device, as compared with the known systems, so that there is a great improvement of the operation security of the mechanical-electronic lock and key system.
  • the assembling of the corresponding lock units is very simple since the contacting device includes no rotating parts. Also, the exchange of defective containing devices with the respective bearing plate parts is possible without intervention in the mechanical portion of the lock.
  • FIG. 1 shows schematically a cylinder lock with key inserted, and a partial sectional view of the portion of the contacting device with a guide element according to FIG. 3;
  • FIG. 2 is a cross-sectional view through the cylinder lock according to FIG. 1, showing the portion of the contacting device;
  • FIG. 3 is a longitudinal sectional view on a larger scale of the guide element of the contacting device in the lock according to FIGS. 1 and 2;
  • FIG. 4 shows on a larger scale a contacting element with two slide springs fitting the guide element according to FIG. 3;
  • FIG. 5 shows schematically a cylinder lock with key inserted and a partial section in the portion of the contact device with a guide element according to FIG. 7;
  • FIG. 6 is a cross sectional view through the cylinder lock according to FIG. 5, showing the portion of the contact device
  • FIG. 7 shows on a larger scale a contact element like that used in FIG. 6 with the two slide spring elements.
  • FIG. 8 shows a perspective view of the guide element of the contact element according to FIG. 1.
  • a cylinder lock 1, represented in FIG. 1, is a component of a double cylinder lock.
  • the cylinder lock 1 is provided with known mechanical holding devices and additionally with an electronic security device.
  • the cylinder lock 1 includes mainly a stator 4, a stator housing 3 and a rotor 5, as shown in FIG. 5.
  • the whole lock is surrounded by an outer mantle (casing) 11.
  • FIGS. 2, 3 and 4 Other details of the lock and key unit represented in FIG. 1 are shown in FIGS. 2, 3 and 4.
  • a flat key 2, inserted in the cylinder lock 1, includes a key barb portion (stem) 10 and a key barb (notch) 7.
  • a contact part 12 In the rear zone of the key barb 7 is arranged a contact part 12 on which are contact points 8. These contact points 8 are connected through electrical conductors 13 with an electronic information carrier 9.
  • the electronic information carrier 9 includes a microprocessor, and/or a use-oriented integrated circuit (ASIC) with one or more memory elements which can process and receive electronic information.
  • ASIC use-oriented integrated circuit
  • These electronic elements of the information carrier 9 are built into the key barb portion 10 of the key 2.
  • the mechanical holding devices In the rotor 5 of the cylinder lock 1 in the portion of the key barb 7 are arranged mechanical holding devices, not shown. The mechanical holding devices cooperate with mechanical coding on the key barb 1. This mechanical joining can be carried out in the known way, according to European patent No. 8,310.
  • the mechanical portion of the cylinder lock is freed when the proper key 2 is pushed all the way into the key channel 6.
  • In the lower portion of the cylinder lock is also a built-in electromagnetic blocking device which acts between rotor 5 and stator 4.
  • This electromagnetic blocking device also includes a bearing plate 14 to which are fastened the contact elements 15 in the form of slide springs.
  • On the bearing plate 14 which is formed on a conductor plate are arranged also electronic elements 41 connected through electrical conductors with the contact elements 15.
  • These electronic elements 41 include, according to the kind of design of the lock, simple electronic parts, memory elements or one or more microprocessors. For the operation of the electronic system, there is also a current source, not shown.
  • the microprocessor of the electronic element 41 in the cylinder lock 1 reads the data from the electronic information carrier 9 on the key 2, and stores as needed, new data in this information carrier 9. If the electronic information carrier 9 on the key 2 contains the right data, then the electromagnetic block, not shown but known per se, in the cylinder lock is released.
  • the lock can be opened by rotation of the rotor 5, if at the same time, the mechanical codings on the key barb 7 are correct.
  • the transmission of data from key 2 to lock 1, and vice versa, takes place through the slide spring elements 27, 28 in the cylinder lock 1 and through the contact points 8 arranged on the contact part 12 of the key barb 7.
  • four contact elements 15, and correspondingly four contact points 8, on each narrow side 20, 21 of the key barb 7, are present.
  • Both the individual contact elements 15 and the individual contact points 8 are insulated from each other and are connected through the integrated electric conductor with the corresponding electronic elements 9 and 41.
  • the bearing or conductor plate 14 and the contact elements 15 are arranged in a guide element 16 which includes a circle segment. The circle element is pushed perpendicular to the axis 17 of the lock into the mantle segment opening 45 on the stator housing 3, and is detachably connected with this housing 3.
  • a microswitch 42 On the bearing or conductor plate 14 is arranged a microswitch 42.
  • This microswitch 42 includes a foil key 44 integrated into the conductor plate 14 which opens or closes the current circuit in the cylinder lock 1.
  • the foil key 44 is activated by means of the key barb 7 which, on pushing into the key channel 6, acts on a switch pin 43.
  • the switch pin 43 is supported in the stator 4 and is also part of the microswitch 42.
  • the section through the cylinder lock in the portion of the contact device, in FIG. 2, shows the stator housing 3, the rotor 5 with the key channel 6, the contact part 12 of the key barb 7 and the guide element 16.
  • This guide element 16 has an opening 22 with side grooves 23, 24, into which is fastened the bearer or conductor plate 14.
  • On the underside of the bearing or conductor plate 14 are arranged the contact elements 15.
  • Each contact element 15 has a connection part 26 which passes through the bearing or conductor plate 14, and is connected on its upper surface with the electrical conductors 25, for example, by soldering.
  • each contact element 15 includes two slide spring elements 27, 28, of which the ends 29, 30 are guided in the guide element 16.
  • the guide element 16 is provided, as shown in FIG. 3, with guide grooves 31. These guide grooves 31 are arranged in the contact surface 32 of the guide element 16 and run perpendicular to the axis of the lock 17.
  • the guide element 16 lies by the surface 32 on the contact surface 33 of the stator housing 3 and is joined detachably to the latter with screws 34, 35.
  • the guide element 16 has the form of a circular segment and is set into the corresponding opening 45 on the stator housing 3.
  • the contact element 15, according to FIG. 4, has a pair of slide springs 27, 28. Both slide spring elements 27 and 28 are provided in the middle with a lengthwise slot 36 and is divided, over the contact portion, into two independently movable parts. The ends 29 and 30 of the slide spring elements 27 and 28 are bent and form slide portions 37 and 38. These slide portions 37 and 38 are provided with an insulating layer 39 and 40. In the example shown, Teflon is used. These coatings 39 and 40 act to insulate the slide spring elements 27, 28 of the contact element 15 from the guide element 16 and at the same time assure the sliding of the slide spring ends 29, 30 in the guide grooves 31.
  • the contact element 15 is shaped so that it can be set into the opening 22 on the guide element 16, and so as to allow the forming of the connection part from this.
  • the guide grooves 31 and the contact surface 33 are also provided with corresponding coatings of Teflon.
  • the contact point 8 on the key 2 are arranged on its narrow sides 20 and 21.
  • the contact points 8 are designed symmetrical on both narrow sides, and are connected in the same way through electrical conductors 13 with the electronic element 9 in the key 2.
  • a circular groove 18 In the portion of the contact device there is formed on the rotor 5 a circular groove 18, by which in this portion a ring gap results between the rotor 5, the stator housing 3 and the bearing body 16.
  • the slide spring elements 27, 28 of the contact portion 15 In the upper portion of this ring groove 18 are positioned the slide spring elements 27, 28 of the contact portion 15. Their position is determined, on the one hand, by the fastening of the connection part 26 to the bearing plate 14, and on the other hand, by the forced guiding of the ends 29, 30 in the guide groove 31.
  • the slide spring elements 27, 28 form on both sides of the connection part 26 or the key channel 6, in the pulled-out position, tangents to the outer diameter of the rotor 5, while they are arranged free of contact with the mantle of the rotor 5. There is thus an interspace between the bottom 19 of the groove on the rotor 5 and the two slide springs 27, 28 of the contact element 15.
  • the dimensions of the contact part 12 with the contact points 8 on the key barb 7 and the groove 18 on the rotor 5 are so chosen that the narrow side 20 of the contact part 12 stands out above the bottom of the groove 19.
  • This projection is such that in the example shown, the contact points 8 on the narrow side 20, with a rotation of the rotor 5, one of the slide springs 27 or 28 touch and deflect these so far out of their rest position that the desired contact force is reached. In this way, the electric connection is made between the electronic elements 9, 41 in the lock 1 and in the key 2, and data can be transmitted so long as the contact points 8 are connected with one of the slide springs 27, 28 of the contact element 15.
  • the cylinder lock 1 shown in FIG. 5 is identical in most parts with the lock in FIG. 1, and is a component of a double cylinder lock which is provided with known mechanical holding devices and additionally with an electronic security device.
  • the cylinder lock 1 includes, here also, mainly of the stator 4, the stator housing 3 and the rotor 5, more clearly shown in FIG. 6, and is surrounded by an outer mantle (casing).
  • the flat key 2, inserted in the cylinder lock 1, includes the key barb portion 10 and the key barb 7. In the rear zone of the key barb 7 is arranged a contact part 12 on which contact points 8 are located. These contact points 8 are connected through electrical conductors 13 with an electronic information carrier 9.
  • FIG. 5 is identical in most parts with the lock in FIG. 1, and is a component of a double cylinder lock which is provided with known mechanical holding devices and additionally with an electronic security device.
  • the cylinder lock 1 includes, here also, mainly of the stator 4, the stator housing 3 and the rotor 5, more clearly shown in FIG. 6, and is
  • the electronic information carrier 9 includes a microprocessor and/or a use-oriented integrated circuit (ASIC) with one or more memory elements, which process and can receive electronic information. These electronic elements of the information carrier 9 are built into the key barb portion 10 of the key 2.
  • ASIC use-oriented integrated circuit
  • These electronic elements of the information carrier 9 are built into the key barb portion 10 of the key 2.
  • mechanical holding devices (not shown) which cooperate with mechanical codings 47 on the key barb 7. This mechanical joining also is carried out in the known way according to European Patent No. 8,310.
  • the mechanical portion of the cylinder lock 1 is released when the right key 2 is pushed all the way into the key channel 6.
  • An electromagnetic blocking device is also built into the lower portion of the cylinder lock 1. This acts between the rotor 5 and the stator 4.
  • This electromagnetic blocking device includes the bearing plate 14 to which are fastened the contact elements 55 with the slide springs 57, 58.
  • the electronic element 4 On the bearing plate 14 which is formed of a conductor plate are arranged the electronic element 4 connected through electric lines with the connection parts 56 on the contact element 55.
  • These electronic elements 41 each include, according to the kind of lock design, simple electronic parts, memory elements or one or more microprocessors. A current source, not shown, is also present for the operation of the electronic system.
  • the microprocessor of the electronic element 41 in the cylinder lock 1 reads the data from the electronic information carrier 9 on the key 2 and stores new data in this information carrier as needed.
  • the electromagnetic block, not shown but known per se, in the cylinder lock 1 is released, and the lock can be opened by turning the rotor 5, if at the same time, the mechanical codings on the key barb 7 are correct.
  • the transmission of data from the key 2 to the lock 1, and vice versa, takes place through the slide spring elements 57, 58 of the contact element 55 in the cylinder lock 1 and through the contact points 8 arranged on the contact part 12 of the key barb 7.
  • four contact elements 55 and, correspondingly, four contact points 8 on each narrow side 20, 21 of the key barb 7 are present. Both the individual contact elements 55 and the individual contact points 8 are insulated from each other and joined through the integrated electric conductor with the corresponding electronic elements 9 and 41.
  • a guide element 50 is set radially into the mantle segment 45 cut out of the stator housing 3.
  • This guide element 50 is arc-shaped and has of electric insulating material such as plastic, for example, and has guide slots for the slide spring elements 57, 56 of the contact element 55.
  • the bearing or conductor plate 14 of and the contact element 55 are fastened by means of screws 48, 49 to the stator housing 3.
  • the bearing plate 14 with the contact elements 55 like the guide element 50, is pushed into the stator housing 3 at right angles to the lock axis 17, and is detachably connected with this housing 3.
  • This microswitch 42 includes a foil key 44 integrated into the conductor plate 14.
  • the microswitch turns on or off the current circuit in the cylinder lock 1.
  • the foil key 44 is activated by means of the key barb 7 which, in pushing into the key channel 6, acts on a switch pin 43.
  • the switch pin 43 is supported in the stator 4 and is also part of the microswitch 42.
  • the rotor 5 is rotated with the key by about 15° from the pull-out position.
  • the guide element 50 lies against surfaces 33 on the stator housing 3 and is fastened with screws 34, 35.
  • On the underside of the bearer plate 14 are arranged the contact elements 55 with the slide springs 57, 58.
  • Each contact element 55 has a connection part 56 which passes through the bearing or conductor plate 14 and is connected on its upper surface with the electrical conductors 25, for example, by soldering. Moreover, the pairs of slide springs 57, 58 belonging to each contact element are guided into the openings 68, 69 in the guide element 50.
  • each of the contact elements 55 has a connection part 57 and a pair of slide springs 57, 58, which are arranged on both sides of the connection part 56.
  • the slide springs 57, 58 each include, with the axis 64, an angle of about 60°. The angle is chosen so that the springs 57, 58, in the built-in condition run tangent to the circle of rotation formed by the contact points 8 on the key 2.
  • the individual slide springs 57, 58 each consist of an outer spring portion 61 and an inner spring portion 62. These two portions 61 and 62 are formed of one piece since the springs are bent by about 180° at the bending points 59 and 60.
  • each slide spring element 57, 58 has a longitudinal slot 36. In this way, the result at the spring portion 62 is that two contact points are movable independently of each other.
  • FIG. 8 is shown the guide element 50 which is used in the example according to FIG. 5.
  • This guide element 50 includes a good electric insulating plastic with good slide properties.
  • the guide element 50 has the form of a mantle segment and is designed in bridge form.
  • the two side parts 52 and 53 are arranged on both slides of the middle support 51, and have bores 65, 66 for the fastening screws 34, 35.
  • the guide element 50 is arched and forms a hollow space 67 for the rotor 5.
  • guide slots 68, 69 are made in the side parts 52 and 53. These serve to guide the contact elements 55.
  • the contact points 8 on the key 2 are arranged on its narrow sides 20 and 21.
  • the contact points 8 are symmetrically designed on both narrow sides 20, 21, and in the same way connected through the electrical conductors 12 with the electronic element 9 in the key 2.
  • In the upper portion of this ring groove 18 are positioned the spring portions 62 of the slide spring elements 57, 58.
  • connection part 56 In the bearing or conductor plate 14, and on the other hand by the forced guiding of the ends 63 in the guide slots 68, 69.
  • the slide spring elements 57, 58 form on both sides of the connection part 56 or of the key channel 6 in the pull-out position, tangents to an outer diameter of the rotor 5, while they are arranged free of contact with the mantle of the rotor 5. Between the bottom 19 of the groove on the rotor 5 and the two spring portions 62 of the slide springs 57, 58, there is thus an interspace.
  • the dimensions of the contact part 12 with the contact points 8 on the key barb 7 and the groove 18 on the rotor 5 are so chosen that the narrow side 20 of the contact part 12 stands out above the bottom 19 of the groove.
  • This projection is so dimensioned that, in the example shown, the contact points 8 on the narrow side 20, with the rotation representative of the rotor 5, touch the spring portion 62 of the slide spring 58 and deflect this latter from its rest position until the desired contact force is reached. In this way, the electric connection is made between the electronic elements 9, 41 in the lock 1 and in the key 2, and data can be transmitted so long as the contact points 8 are connected with one of the slide springs 57, 58 of a contact element 55.
  • the construction according to the invention makes possible the premounting of the contact element 15 or 55 on the bearing or conductor plate 14.
  • the guide element 16, in common with the bearing plate 14 and the contact element 15 is set radially into the stator housing 3 and fastened.
  • the guide element 50 and the bearing plate 14 with the contact element 55 are set radially, in succession, into the stator housing 3 and fastened.
  • the whole mechanical portion of the cylinder lock 1, in both examples of execution can be fully mounted and tested in advance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
  • Transmitters (AREA)
  • Steroid Compounds (AREA)
US07/279,155 1987-02-09 1988-02-02 Contact device for transmitting electrical signals between a lock and key in a cylinder lock Expired - Fee Related US4924686A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH45587A CH671799A5 (en) 1987-02-09 1987-02-09 Contact system for electronically coded cylinder lock key
CH455/87 1987-02-09
CH39/88 1988-01-07
CH3988 1988-01-07

Publications (1)

Publication Number Publication Date
US4924686A true US4924686A (en) 1990-05-15

Family

ID=25683330

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/279,155 Expired - Fee Related US4924686A (en) 1987-02-09 1988-02-02 Contact device for transmitting electrical signals between a lock and key in a cylinder lock

Country Status (12)

Country Link
US (1) US4924686A (fi)
EP (1) EP0278905B1 (fi)
JP (1) JP2633942B2 (fi)
CN (1) CN1027091C (fi)
AT (1) ATE67270T1 (fi)
CA (1) CA1303868C (fi)
DE (1) DE3864693D1 (fi)
ES (1) ES2003323T3 (fi)
FI (1) FI87598C (fi)
GR (2) GR890300120T1 (fi)
IL (1) IL85354A (fi)
WO (1) WO1988005854A1 (fi)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092148A (en) * 1990-08-08 1992-03-03 Rong Long Wang Pry-proof computerized mechanical lock
US5311757A (en) * 1992-03-06 1994-05-17 Aug. Winkhaus Gmbh & Co. Kg Flat key with circuit chip
AU662049B2 (en) * 1992-04-16 1995-08-17 Abloy Security Ltd Oy Electromechanical lock arrangement
US5469727A (en) * 1992-03-06 1995-11-28 Aug.Winkhaus Gmbh & Co. Kg Electronic lock cylinder
US5526662A (en) * 1993-12-28 1996-06-18 Duncan Industries Parking Control Systems Corp. Cashless key and receptacle system
US5605067A (en) * 1994-09-21 1997-02-25 Em Microelectronique-Marin S.A. Electronic identification device
US5642805A (en) * 1995-10-12 1997-07-01 Tefft; Brian Input device lock
US5659291A (en) * 1994-11-28 1997-08-19 Ford Motor Company Key-in-ignition lock reminder system
US5749253A (en) * 1994-03-30 1998-05-12 Dallas Semiconductor Corporation Electrical/mechanical access control systems and methods
US5775148A (en) * 1995-03-16 1998-07-07 Medeco Security Locks, Inc. Universal apparatus for use with electronic and/or mechanical access control devices
US5823028A (en) * 1993-06-08 1998-10-20 Kabushiki Kaisha Tokai Rika Denki Seisakusho Cylinder lock and key device
US5826449A (en) * 1996-11-12 1998-10-27 The Whitaker Corporation Electrical ignition key assembly
US5878611A (en) * 1996-10-24 1999-03-09 Keso Salzburg-Gmbh Flat key
US5946956A (en) * 1997-04-25 1999-09-07 Roto Frank Eisenwarenfabrik Ag Electromechanical lock system
FR2784224A1 (fr) * 1998-09-15 2000-04-07 Siemens Ag Module d'interrupteur d'allumage et de demarrage et procede de fabrication d'un tel module
US6442986B1 (en) 1998-04-07 2002-09-03 Best Lock Corporation Electronic token and lock core
EP1736621A1 (de) * 2005-06-24 2006-12-27 BUGA Technologies GmbH Schleifringanordnung
US20070188302A1 (en) * 2002-03-29 2007-08-16 Datakey Electronics, Inc. Electronic Key System and Method
US20080223094A1 (en) * 2005-06-10 2008-09-18 Assa Ab Lock Key And Method Of Its Manufacture
US20090140837A1 (en) * 2007-07-19 2009-06-04 Glen Eric Jennings RF Token and Receptacle System and Method
US20090273437A1 (en) * 2008-04-30 2009-11-05 Siemens Aktiengesellschaft Key-operated switch
EP2141663A2 (en) 2008-06-30 2010-01-06 Trell, Anders Edvard Method for credentialing mechanical keys and associated devices
US20100264218A1 (en) * 2007-08-29 2010-10-21 Datakey Electronics, Inc Data carrier system and method
USD649486S1 (en) 2009-07-09 2011-11-29 ATEK Products , LLC Electronic token and data carrier
USD649896S1 (en) 2009-01-30 2011-12-06 Atek Products, Llc Electronic token and data carrier receptacle
USD649894S1 (en) 2008-12-30 2011-12-06 Atek Products, Llc Electronic token and data carrier
USD649895S1 (en) 2009-01-30 2011-12-06 Atek Products, Llc Electronic token and data carrier
US8573500B2 (en) 2009-01-30 2013-11-05 ATEK Products, LLC. Data carrier system having a compact footprint and methods of manufacturing the same
US10490038B2 (en) * 2009-01-13 2019-11-26 Invue Security Products Inc. Combination non-programmable and programmable key for security device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685444A5 (de) * 1991-10-07 1995-07-14 Bauer Kaba Ag Identifikationsträger für ein Schliesssystem.
DE4314903A1 (de) * 1993-05-05 1994-11-10 Winkhaus Fa August Schloßanordnung
ES2106668B1 (es) * 1994-11-18 1998-06-01 Azbe B Zubia S A Perfeccionamientos introducidos en cilindros de cierre electronicomecanico.
DE19709188C2 (de) * 1997-03-06 2001-10-31 Siemens Ag Tragbares elektronisches Gerät
DE10162201A1 (de) * 2000-12-20 2002-07-11 Tokai Rika Co Ltd Schlüsselzylinder und Verfahren zum Zusammenbau eines Schlüsselzylinders
DE10325968B4 (de) * 2003-06-07 2005-10-27 Buga Technologies Gmbh Schließzylinder
DE10360949B4 (de) * 2003-12-23 2020-03-26 Günter Uhlmann Elektromechanisches Schließsystem
FR2893654B1 (fr) * 2005-11-18 2012-01-13 Valeo Securite Habitacle Serrure de securite
CN101481966B (zh) * 2009-01-21 2012-01-04 宁波大学 一种基于身份识别的电子锁
CN103527005B (zh) * 2012-07-03 2015-08-05 陈炳辉 电子锁芯及含有该电子锁芯的电子锁系统及开锁方法
CN103021056B (zh) * 2012-12-11 2015-10-21 奉化市供电局 一种读写卡座和电子钥匙
CN103741994A (zh) * 2014-01-02 2014-04-23 福州市台江区振斌高效电磁聚能科技研究所 U盾钥匙
FR3069268A1 (fr) * 2017-07-21 2019-01-25 Cogelec Serrure electronique
FR3072989B1 (fr) * 2017-10-27 2019-10-11 Cogelec Clef electronique pour une serrure electronique
DE102022127174A1 (de) * 2022-10-18 2024-04-18 Dormakaba Schweiz Ag Verfahren zur Inbetriebnahme einer elektro-mechanischen Sperrvorrichtung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347072A (en) * 1965-06-28 1967-10-17 Bretan H Electronic solid state lock mechanism
US3550410A (en) * 1967-04-19 1970-12-29 Edwin F Toepfer Indicating cylinder lock mechanism
US3787812A (en) * 1971-10-20 1974-01-22 Waterbury Pressed Metal Co Pick-proof lock
GB2055951A (en) * 1980-08-04 1981-03-11 Day H V Locks
US4326125A (en) * 1980-06-26 1982-04-20 Datakey, Inc. Microelectronic memory key with receptacle and systems therefor
US4393672A (en) * 1978-12-13 1983-07-19 Egon Gelhard Cylinder lock and key assembly
US4458512A (en) * 1981-03-06 1984-07-10 Egon Gelhard Cylinder lock with key for mechanical and/or electromechanical locking
US4663952A (en) * 1985-01-18 1987-05-12 Egon Gelhard Device for the contactless coupling of the control and output currents between the electronic elements on the locking cylinder and the electronic elements in the key of an electro/mechanical locking device
GB2187227A (en) * 1986-02-28 1987-09-03 Honda Lock Mfg Co Ltd Electronic lock and key system having key identifying function
US4712398A (en) * 1986-03-21 1987-12-15 Emhart Industries, Inc. Electronic locking system and key therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969584A (en) * 1975-01-17 1976-07-13 Cecil John Miller System for recording the actuation of remotely located locking devices
US4379966A (en) * 1981-07-23 1983-04-12 Datakey, Inc. Receptacle for electronic information key
CH665247A5 (de) * 1984-08-18 1988-04-29 Bauer Kaba Ag Elektrische kontakteinrichtung an einem schliesszylinder.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3347072A (en) * 1965-06-28 1967-10-17 Bretan H Electronic solid state lock mechanism
US3550410A (en) * 1967-04-19 1970-12-29 Edwin F Toepfer Indicating cylinder lock mechanism
US3787812A (en) * 1971-10-20 1974-01-22 Waterbury Pressed Metal Co Pick-proof lock
US4393672A (en) * 1978-12-13 1983-07-19 Egon Gelhard Cylinder lock and key assembly
US4326125A (en) * 1980-06-26 1982-04-20 Datakey, Inc. Microelectronic memory key with receptacle and systems therefor
GB2055951A (en) * 1980-08-04 1981-03-11 Day H V Locks
US4458512A (en) * 1981-03-06 1984-07-10 Egon Gelhard Cylinder lock with key for mechanical and/or electromechanical locking
US4663952A (en) * 1985-01-18 1987-05-12 Egon Gelhard Device for the contactless coupling of the control and output currents between the electronic elements on the locking cylinder and the electronic elements in the key of an electro/mechanical locking device
GB2187227A (en) * 1986-02-28 1987-09-03 Honda Lock Mfg Co Ltd Electronic lock and key system having key identifying function
US4712398A (en) * 1986-03-21 1987-12-15 Emhart Industries, Inc. Electronic locking system and key therefor

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092148A (en) * 1990-08-08 1992-03-03 Rong Long Wang Pry-proof computerized mechanical lock
US5469727A (en) * 1992-03-06 1995-11-28 Aug.Winkhaus Gmbh & Co. Kg Electronic lock cylinder
US5311757A (en) * 1992-03-06 1994-05-17 Aug. Winkhaus Gmbh & Co. Kg Flat key with circuit chip
US5605066A (en) * 1992-04-16 1997-02-25 Abloy Security Ltd Oy Electromechanical lock arrangement
AU662049B2 (en) * 1992-04-16 1995-08-17 Abloy Security Ltd Oy Electromechanical lock arrangement
US5823028A (en) * 1993-06-08 1998-10-20 Kabushiki Kaisha Tokai Rika Denki Seisakusho Cylinder lock and key device
US5526662A (en) * 1993-12-28 1996-06-18 Duncan Industries Parking Control Systems Corp. Cashless key and receptacle system
US5749253A (en) * 1994-03-30 1998-05-12 Dallas Semiconductor Corporation Electrical/mechanical access control systems and methods
US5605067A (en) * 1994-09-21 1997-02-25 Em Microelectronique-Marin S.A. Electronic identification device
US5659291A (en) * 1994-11-28 1997-08-19 Ford Motor Company Key-in-ignition lock reminder system
US5775148A (en) * 1995-03-16 1998-07-07 Medeco Security Locks, Inc. Universal apparatus for use with electronic and/or mechanical access control devices
US5642805A (en) * 1995-10-12 1997-07-01 Tefft; Brian Input device lock
US5878611A (en) * 1996-10-24 1999-03-09 Keso Salzburg-Gmbh Flat key
US5826449A (en) * 1996-11-12 1998-10-27 The Whitaker Corporation Electrical ignition key assembly
US5946956A (en) * 1997-04-25 1999-09-07 Roto Frank Eisenwarenfabrik Ag Electromechanical lock system
US6442986B1 (en) 1998-04-07 2002-09-03 Best Lock Corporation Electronic token and lock core
US6668606B1 (en) 1998-04-07 2003-12-30 Best Access Systems Electronic token lock core
US6840072B2 (en) 1998-04-07 2005-01-11 Stanley Security Solutions, Inc. Electronic token and lock core
US7316140B2 (en) 1998-04-07 2008-01-08 Stanley Security Solutions, Inc. Electronic token and lock core
FR2784224A1 (fr) * 1998-09-15 2000-04-07 Siemens Ag Module d'interrupteur d'allumage et de demarrage et procede de fabrication d'un tel module
US20070188302A1 (en) * 2002-03-29 2007-08-16 Datakey Electronics, Inc. Electronic Key System and Method
US20080223094A1 (en) * 2005-06-10 2008-09-18 Assa Ab Lock Key And Method Of Its Manufacture
EP1736621A1 (de) * 2005-06-24 2006-12-27 BUGA Technologies GmbH Schleifringanordnung
US20090140837A1 (en) * 2007-07-19 2009-06-04 Glen Eric Jennings RF Token and Receptacle System and Method
US20100264218A1 (en) * 2007-08-29 2010-10-21 Datakey Electronics, Inc Data carrier system and method
US20090273437A1 (en) * 2008-04-30 2009-11-05 Siemens Aktiengesellschaft Key-operated switch
EP2141663A2 (en) 2008-06-30 2010-01-06 Trell, Anders Edvard Method for credentialing mechanical keys and associated devices
USD649894S1 (en) 2008-12-30 2011-12-06 Atek Products, Llc Electronic token and data carrier
US10490038B2 (en) * 2009-01-13 2019-11-26 Invue Security Products Inc. Combination non-programmable and programmable key for security device
USD649896S1 (en) 2009-01-30 2011-12-06 Atek Products, Llc Electronic token and data carrier receptacle
USD649895S1 (en) 2009-01-30 2011-12-06 Atek Products, Llc Electronic token and data carrier
US8573500B2 (en) 2009-01-30 2013-11-05 ATEK Products, LLC. Data carrier system having a compact footprint and methods of manufacturing the same
USD649486S1 (en) 2009-07-09 2011-11-29 ATEK Products , LLC Electronic token and data carrier

Also Published As

Publication number Publication date
IL85354A0 (en) 1988-07-31
CN1027091C (zh) 1994-12-21
FI87598C (fi) 1993-01-25
WO1988005854A1 (en) 1988-08-11
DE3864693D1 (de) 1991-10-17
IL85354A (en) 1990-11-05
ATE67270T1 (de) 1991-09-15
JP2633942B2 (ja) 1997-07-23
EP0278905B1 (de) 1991-09-11
FI884632A (fi) 1988-10-07
EP0278905A1 (de) 1988-08-17
FI884632A0 (fi) 1988-10-07
ES2003323A4 (es) 1988-11-01
JPH01502281A (ja) 1989-08-10
CA1303868C (en) 1992-06-23
ES2003323T3 (es) 1992-04-01
CN88100778A (zh) 1988-08-24
GR3002694T3 (en) 1993-01-25
GR890300120T1 (en) 1990-01-19
FI87598B (fi) 1992-10-15

Similar Documents

Publication Publication Date Title
US4924686A (en) Contact device for transmitting electrical signals between a lock and key in a cylinder lock
US5507162A (en) Eurocylinder-type assembly for electronic lock and key system
US4625084A (en) Rotary switch construction and method of making the same
US7616447B2 (en) IC card
US5685182A (en) Door handle-mounted eurocylinder-type assembly for electronic lock and key system
US4551587A (en) Rotary switch for printed circuit boards
US4728755A (en) Rotary switch construction and method of making the same
EP0015356B1 (en) Bipolar shunting device for multipolar electric lines of the armor-plated type
JPH1041107A (ja) 回転操作型電子部品
CN101158482B (zh) 高频加热设备
US4458512A (en) Cylinder lock with key for mechanical and/or electromechanical locking
KR20010081141A (ko) 복합조작형 전기부품
JP2530820B2 (ja) 電話受話器等に適した回転コネクタ
US4647734A (en) Binary switch lock
CN101086929A (zh) 旋转型电气部件
US5722845A (en) Electrical connectors
FI58230C (fi) Styrstroemstaellare
KR830001224Y1 (ko) 어댑터
KR200142407Y1 (ko) 조작 가능한 전기부품과 그 제조방법
JPH0159687B2 (fi)
JPH0234402B2 (fi)
US4185179A (en) Key-switch device
SU647734A1 (ru) Устройство дл перемещени кольцевой магнитной ленты
SU1475754A1 (ru) Устройство дл электроконтактного нагрева
SU1051580A2 (ru) Переключатель магнитофона

Legal Events

Date Code Title Description
AS Assignment

Owner name: R. BERCHTOLD AG, ZOLLIKOFEN, SWITZERLAND, A CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VONLANTHEN, BENNO;REEL/FRAME:004962/0224

Effective date: 19880905

Owner name: R. BERCHTOLD AG, A CORP. OF SWITZERLAND, SWITZERLA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VONLANTHEN, BENNO;REEL/FRAME:004962/0224

Effective date: 19880905

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20020515